diff --git a/pkg/local_object_storage/writecache/delete.go b/pkg/local_object_storage/writecache/delete.go
index a6ad60e96..99f00d0fc 100644
--- a/pkg/local_object_storage/writecache/delete.go
+++ b/pkg/local_object_storage/writecache/delete.go
@@ -47,6 +47,7 @@ func (c *cache) Delete(addr *objectSDK.Address) error {
 		}
 		c.dbSize.Sub(uint64(has))
 		storagelog.Write(c.log, storagelog.AddressField(saddr), storagelog.OpField("db DELETE"))
+		c.objCounters.DecDB()
 		return nil
 	}
 
@@ -57,6 +58,7 @@ func (c *cache) Delete(addr *objectSDK.Address) error {
 
 	if err == nil {
 		storagelog.Write(c.log, storagelog.AddressField(saddr), storagelog.OpField("fstree DELETE"))
+		c.objCounters.DecFS()
 	}
 
 	return err
diff --git a/pkg/local_object_storage/writecache/options.go b/pkg/local_object_storage/writecache/options.go
index 62a40cc6c..71ecb4427 100644
--- a/pkg/local_object_storage/writecache/options.go
+++ b/pkg/local_object_storage/writecache/options.go
@@ -26,6 +26,11 @@ type options struct {
 	smallObjectSize uint64
 	// workersCount is the number of workers flushing objects in parallel.
 	workersCount int
+	// maxCacheSize is the maximum total size of all objects saved in cache (DB + FS).
+	// 1 GiB by default.
+	maxCacheSize uint64
+	// objCounters is an ObjectCounters instance needed for cache size estimation.
+	objCounters ObjectCounters
 }
 
 // WithLogger sets logger.
@@ -88,3 +93,17 @@ func WithFlushWorkersCount(c int) Option {
 		}
 	}
 }
+
+// WithObjectCounters sets ObjectCounters instance needed for cache write-cache size estimation.
+func WithObjectCounters(v ObjectCounters) Option {
+	return func(o *options) {
+		o.objCounters = v
+	}
+}
+
+// WithMaxCacheSize sets maximum write-cache size in bytes.
+func WithMaxCacheSize(sz uint64) Option {
+	return func(o *options) {
+		o.maxCacheSize = sz
+	}
+}
diff --git a/pkg/local_object_storage/writecache/persist.go b/pkg/local_object_storage/writecache/persist.go
index d6d766212..afb7ff097 100644
--- a/pkg/local_object_storage/writecache/persist.go
+++ b/pkg/local_object_storage/writecache/persist.go
@@ -54,18 +54,28 @@ func (c *cache) persistLoop() {
 
 func (c *cache) persistToCache(objs []objectInfo) []int {
 	var (
-		failMem []int
+		failMem []int // some index is negative => all objects starting from it will overflow the cache
 		doneMem []int
 	)
 	var sz uint64
 	err := c.db.Update(func(tx *bbolt.Tx) error {
 		b := tx.Bucket(defaultBucket)
+		cacheSz := c.estimateCacheSize()
 		for i := range objs {
 			if uint64(len(objs[i].data)) >= c.smallObjectSize {
 				failMem = append(failMem, i)
 				continue
 			}
 
+			// check if object will overflow write-cache size limit
+			updCacheSz := c.incSizeDB(cacheSz)
+			if updCacheSz > c.maxCacheSize {
+				// set negative index. We decrement index to cover 0 val (overflow is practically impossible)
+				failMem = append(failMem, -i-1)
+
+				return nil
+			}
+
 			err := b.Put([]byte(objs[i].addr), objs[i].data)
 			if err != nil {
 				return err
@@ -73,6 +83,10 @@ func (c *cache) persistToCache(objs []objectInfo) []int {
 			sz += uint64(len(objs[i].data))
 			doneMem = append(doneMem, i)
 			storagelog.Write(c.log, storagelog.AddressField(objs[i].addr), storagelog.OpField("db PUT"))
+
+			// update cache size
+			cacheSz = updCacheSz
+			c.objCounters.IncDB()
 		}
 		return nil
 	})
@@ -88,17 +102,55 @@ func (c *cache) persistToCache(objs []objectInfo) []int {
 
 	var failDisk []int
 
-	for _, i := range failMem {
-		if uint64(len(objs[i].data)) > c.maxObjectSize {
-			failDisk = append(failDisk, i)
+	cacheSz := c.estimateCacheSize()
+
+	for _, objInd := range failMem {
+		var (
+			updCacheSz  uint64
+			overflowInd = -1
+		)
+
+		if objInd < 0 {
+			// actually, since the overflow was detected in DB tx, the required space could well have been freed,
+			// but it is easier to consider the entire method atomic
+			overflowInd = -objInd - 1 // subtract 1 since we decremented index above
+		} else {
+			// check if object will overflow write-cache size limit
+			if updCacheSz = c.incSizeFS(cacheSz); updCacheSz > c.maxCacheSize {
+				overflowInd = objInd
+			}
+		}
+
+		if overflowInd >= 0 {
+		loop:
+			for j := range objs[overflowInd:] {
+				// exclude objects which are already stored in DB
+				for _, doneMemInd := range doneMem {
+					if j == doneMemInd {
+						continue loop
+					}
+				}
+
+				failDisk = append(failDisk, j)
+			}
+
+			break
+		}
+
+		if uint64(len(objs[objInd].data)) > c.maxObjectSize {
+			failDisk = append(failDisk, objInd)
 			continue
 		}
 
-		err := c.fsTree.Put(objs[i].obj.Address(), objs[i].data)
+		err := c.fsTree.Put(objs[objInd].obj.Address(), objs[objInd].data)
 		if err != nil {
-			failDisk = append(failDisk, i)
+			failDisk = append(failDisk, objInd)
 		} else {
-			storagelog.Write(c.log, storagelog.AddressField(objs[i].addr), storagelog.OpField("fstree PUT"))
+			storagelog.Write(c.log, storagelog.AddressField(objs[objInd].addr), storagelog.OpField("fstree PUT"))
+
+			// update cache size
+			cacheSz = updCacheSz
+			c.objCounters.IncFS()
 		}
 	}
 
diff --git a/pkg/local_object_storage/writecache/state.go b/pkg/local_object_storage/writecache/state.go
new file mode 100644
index 000000000..d51d1f937
--- /dev/null
+++ b/pkg/local_object_storage/writecache/state.go
@@ -0,0 +1,103 @@
+package writecache
+
+import (
+	"fmt"
+
+	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/fstree"
+	"go.etcd.io/bbolt"
+	"go.uber.org/atomic"
+)
+
+// ObjectCounters is an interface of the storage of cached object amount.
+type ObjectCounters interface {
+	// Increments number of objects saved in DB.
+	IncDB()
+	// Decrements number of objects saved in DB.
+	DecDB()
+	// Returns number of objects saved in DB.
+	DB() uint64
+
+	// Increments number of objects saved in FSTree.
+	IncFS()
+	// Decrements number of objects saved in FSTree.
+	DecFS()
+	// Returns number of objects saved in FSTree.
+	FS() uint64
+
+	// Reads number of objects saved in write-cache. It is called on write-cache initialization step.
+	Read() error
+	// Flushes the values and closes the storage. It is called on write-cache shutdown.
+	FlushAndClose()
+}
+
+func (c *cache) estimateCacheSize() uint64 {
+	return c.objCounters.DB()*c.smallObjectSize + c.objCounters.FS()*c.maxObjectSize
+}
+
+func (c *cache) incSizeDB(sz uint64) uint64 {
+	return sz + c.smallObjectSize
+}
+
+func (c *cache) incSizeFS(sz uint64) uint64 {
+	return sz + c.maxObjectSize
+}
+
+type counters struct {
+	cDB, cFS atomic.Uint64
+
+	db *bbolt.DB
+
+	fs *fstree.FSTree
+}
+
+func (x *counters) IncDB() {
+	x.cDB.Inc()
+}
+
+func (x *counters) DecDB() {
+	x.cDB.Dec()
+}
+
+func (x *counters) DB() uint64 {
+	return x.cDB.Load()
+}
+
+func (x *counters) IncFS() {
+	x.cFS.Inc()
+}
+
+func (x *counters) DecFS() {
+	x.cFS.Dec()
+}
+
+func (x *counters) FS() uint64 {
+	return x.cFS.Load()
+}
+
+func (x *counters) Read() error {
+	var inDB uint64
+
+	err := x.db.View(func(tx *bbolt.Tx) error {
+		b := tx.Bucket(defaultBucket)
+		if b != nil {
+			inDB = uint64(b.Stats().KeyN)
+		}
+
+		return nil
+	})
+	if err != nil {
+		return fmt.Errorf("could not read write-cache DB counter: %w", err)
+	}
+
+	x.cDB.Store(inDB)
+
+	// FIXME: calculate the actual value in FSTree (new method?).
+	//  For now we can think that db/fs = 50/50.
+	x.cFS.Store(inDB)
+
+	return nil
+}
+
+func (x *counters) FlushAndClose() {
+	// values aren't stored
+}
diff --git a/pkg/local_object_storage/writecache/storage.go b/pkg/local_object_storage/writecache/storage.go
index 17e4075aa..e82e1fb41 100644
--- a/pkg/local_object_storage/writecache/storage.go
+++ b/pkg/local_object_storage/writecache/storage.go
@@ -118,6 +118,7 @@ func (c *cache) deleteFromDB(keys [][]byte) error {
 		return err
 	}
 	c.dbSize.Sub(sz)
+	c.objCounters.DecDB()
 	return nil
 }
 
@@ -139,6 +140,7 @@ func (c *cache) deleteFromDisk(keys [][]byte) error {
 			continue
 		} else if err == nil {
 			storagelog.Write(c.log, storagelog.AddressField(string(keys[i])), storagelog.OpField("fstree DELETE"))
+			c.objCounters.DecFS()
 		}
 	}
 
diff --git a/pkg/local_object_storage/writecache/writecache.go b/pkg/local_object_storage/writecache/writecache.go
index 593437ba3..1c4afa06e 100644
--- a/pkg/local_object_storage/writecache/writecache.go
+++ b/pkg/local_object_storage/writecache/writecache.go
@@ -60,6 +60,7 @@ const (
 	maxInMemorySizeBytes = 1024 * 1024 * 1024 // 1 GiB
 	maxObjectSize        = 64 * 1024 * 1024   // 64 MiB
 	smallObjectSize      = 32 * 1024          // 32 KiB
+	maxCacheSizeBytes    = 1 << 30            // 1 GiB
 )
 
 var (
@@ -81,6 +82,7 @@ func New(opts ...Option) Cache {
 			maxObjectSize:   maxObjectSize,
 			smallObjectSize: smallObjectSize,
 			workersCount:    flushWorkersCount,
+			maxCacheSize:    maxCacheSizeBytes,
 		},
 	}
 
@@ -91,9 +93,21 @@ func New(opts ...Option) Cache {
 	return c
 }
 
-// Open opens and initializes database.
+// Open opens and initializes database. Reads object counters from the ObjectCounters instance.
 func (c *cache) Open() error {
-	return c.openStore()
+	err := c.openStore()
+	if err != nil {
+		return err
+	}
+
+	if c.objCounters == nil {
+		c.objCounters = &counters{
+			db: c.db,
+			fs: c.fsTree,
+		}
+	}
+
+	return c.objCounters.Read()
 }
 
 // Init runs necessary services.
@@ -103,8 +117,9 @@ func (c *cache) Init() error {
 	return nil
 }
 
-// Close closes db connection and stops services.
+// Close closes db connection and stops services. Executes ObjectCounters.FlushAndClose op.
 func (c *cache) Close() error {
 	close(c.closeCh)
+	c.objCounters.FlushAndClose()
 	return c.db.Close()
 }